Toyota Yaris: Brake / Hill Launch Assist (HLA)(If equipped)
Hill Launch Assist (HLA) is a function which assists the driver in
accelerating from a stop while on a slope. When the driver
releases the brake pedal and depresses the accelerator pedal
while on a slope, the function prevents the vehicle from rolling.
The braking force is maintained automatically after the brake
pedal is released on a steep grade.
For vehicles with a manual transaxle, Hill Launch Assist (HLA) operates on a downward slope when the shift lever is in the reverse (R)
position, and on an upward slope when the shift lever is in a position
other than the reverse (R) position.
For vehicles with an automatic transaxle, Hill Launch Assist (HLA)
operates on a downward slope when the shift lever is in the reverse
(R) position, and on an upward slope when the shift lever is in a forward gear.
- Hill Launch Assist (HLA) does not operate on a gentle slope. In addition,
the
gradient of the slope on which the system will operate changes depending
on the vehicle’s load.
- Hill Launch Assist (HLA) does not operate if the parking brake is
applied, the
vehicle has not stopped completely, or the clutch pedal is released.
- While Hill Launch Assist (HLA) is operating, the brake pedal may feel
stiff
and vibrate, however, this does not indicate a malfunction.
- Hill Launch Assist (HLA) does not operate while the TCS/DSC indicator
light
is illuminated. Refer to Contact Your Toyota
Dealer and Have Vehicle Inspected.
- Hill Launch Assist (HLA) does not turn off even if the DSC OFF switch is
pressed to turn off the TCS/DSC.
WARNING
Do not rely completely on Hill Launch Assist (HLA)
Hill Launch Assist (HLA) is an auxiliary device for accelerating from a
stop
on a slope. The system only operates for about 2 seconds and therefore,
relying only on the system, when accelerating from a stop is dangerous
because the vehicle may move (roll) unexpectedly and cause an accident.
The vehicle could roll depending on the vehicle’s load or if it is
towing something. In addition, for vehicles with a manual transaxle, the vehicle
could still
roll depending on how the clutch pedal or the accelerator pedal is operated.
Always confirm the safety around the vehicle before starting to drive the
vehicle.
During emergency braking situations when it is necessary to depress
the brake pedal with greater force, the brake assist system provides
braking assistance, thus enhancing braking performance...
Other information:
DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode B00011A Driver Frontal Stage 1 Deployment Control Circuit Resistance Below Threshold
The airbag sensor assembly detects a line short in the driver seat airbag squib circuit for 2 seconds during the primary check
Spiral cable sub-assembly malfunction
Horn button assembly malfunction
Airbag sensor assembly malfunction
Harness or connector
Spiral cable sub-assembly
Horn button assembly
Airbag sensor assembly
Comes on Applies to check mode WIRING DIAGRAM
CAUTION / NOTICE / HINT NOTICE: After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal...
CAUTION / NOTICE / HINT HINT: *: Use the GTS. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
NEXT
2. CUSTOMER PROBLEM ANALYSIS
NEXT
3. PRE-CHECK (a) Measure the auxiliary battery voltage. Standard voltage: 11 to 14 V (ignition switch off) If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step...
Categories
No special break-in is necessary, but a few precautions in the first 600
miles (1,000 km) may add to the performance, economy, and life of
the vehicle.
Do not race the engine.
Do not maintain one constant speed, either slow or fast, for a long
period of time.
Do not drive constantly at full-throttle or high engine rpm for
extended periods of time.
Avoid unnecessary hard stops.
Avoid full-throttle starts.
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